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Pete (El Supremo) 8ce502770f fix problem with left+right channels being swapped 8 år sedan
examples Add USB examples 8 år sedan
extras Len noticed a bug in binary velocity output 8 år sedan
gui Document USB examples 8 år sedan
utility Support more clock speeds 8 år sedan
.travis.yml Update Travis CI settings 8 år sedan
Audio.h Add very basic Karplus-Strong synthesis 8 år sedan
AudioControl.h Add AudioSynthWaveformSine 10 år sedan
README.md remove Travis CI status from readme (it's too unreliable) 8 år sedan
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 år sedan
analyze_fft256.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 år sedan
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_notefreq.cpp Removed debug code, updated comments 8 år sedan
analyze_notefreq.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_peak.cpp Add TODO for analyze peak optimization 8 år sedan
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_print.cpp Change AudioAnalyzePrint name API 10 år sedan
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) 8 år sedan
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9 år sedan
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
control_ak4558.cpp Fixed control functions, examples, GUI elements 9 år sedan
control_ak4558.h Fixed control functions, examples, GUI elements 9 år sedan
control_cs4272.cpp Add CS4272 control (thanks William Hollender) 8 år sedan
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 år sedan
control_sgtl5000.cpp Add ability to control two SGTL5000 chips 8 år sedan
control_sgtl5000.h Add ability to control two SGTL5000 chips 8 år sedan
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) 9 år sedan
control_wm8731.h AudioControlWM8731::inputLevel(float n) 9 år sedan
data_ulaw.c Add missing open source license headers 10 år sedan
data_waveforms.c Remove old AudioSynthWaveform 10 år sedan
data_windows.c Add other window types for 1024 point FFT 10 år sedan
effect_bitcrusher.cpp Fix compiler warning 9 år sedan
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 8 år sedan
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_delay.cpp Remove unused multiplier 10 år sedan
effect_delay.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_delay_ext.cpp Add SPI external memory timing comment 8 år sedan
effect_delay_ext.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_envelope.cpp Add AudioEffectEnvelope 10 år sedan
effect_envelope.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_fade.cpp Add MIT license 10 år sedan
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_flange.cpp use AUDIO_SAMPLE_RATE_EXACT 8 år sedan
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) 8 år sedan
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_multiply.cpp Fix more Teensy-LC compiler errors 9 år sedan
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients 8 år sedan
filter_biquad.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
filter_fir.cpp Impove and document FIR filter 10 år sedan
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 år sedan
filter_variable.cpp Fix more Teensy-LC compiler errors 9 år sedan
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
input_adc.cpp Fix some Teensy-LC compiler errors 9 år sedan
input_adc.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
input_i2s.cpp Fix more Teensy-LC compiler errors 9 år sedan
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
input_i2s_quad.cpp More hardware defs 8 år sedan
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
keywords.txt Add Synthesis Guitar example 8 år sedan
library.json Use tagged source code from repo 8 år sedan
library.properties Increase to version 1.03 9 år sedan
memcpy_audio.S More hardware defs 8 år sedan
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 år sedan
mixer.cpp Fix some Teensy-LC compiler errors 9 år sedan
mixer.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
multiplier.md Add a multiplier (by rheslip) 10 år sedan
new_objects.md change format for new_objects files 11 år sedan
output_dac.cpp More hardware defs 8 år sedan
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_i2s.cpp Support more clock speeds 8 år sedan
output_i2s.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_i2s_quad.cpp Support more clock speeds 8 år sedan
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_pwm.cpp Fix more Teensy-LC compiler errors 9 år sedan
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_spdif.cpp Support more clock speeds 8 år sedan
output_spdif.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_memory.cpp Add status and position functions to AudioPlayMemory 10 år sedan
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_queue.cpp do not forget - your own addition :-) 10 år sedan
play_queue.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 år sedan
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_sd_wav.cpp fix problem with left+right channels being swapped 8 år sedan
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9 år sedan
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 år sedan
record_queue.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
spi_interrupt.cpp Add SPI interrupt registration layer 10 år sedan
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_dc.cpp Add AudioSynthWaveformDc 10 år sedan
synth_dc.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong 8 år sedan
synth_karplusstrong.h Add Synthesis Guitar example 8 år sedan
synth_pinknoise.cpp Clean up harmless compiler warnings 10 år sedan
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. 8 år sedan
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 år sedan
synth_sine.cpp fix incorrect comment 8 år sedan
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_tonesweep.cpp fix tonesweep 8 år sedan
synth_tonesweep.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. 9 år sedan
synth_waveform.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 år sedan
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9 år sedan
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 år sedan

README.md

Teensy Audio Library

16 bit, 44.1 kHz streaming audio library for Teensy 3.x, featuring:

  • Polyphonic Playback
  • Recording
  • Synthesis
  • Analysis
  • Effects
  • Filtering
  • Mixing
  • Multiple Simultaneous Inputs & Outputs
  • Flexible signal routing between library objects
  • Automatic Streaming while your Arduino sketch runs

Main Audio Library Page

http://www.pjrc.com/teensy/td_libs_Audio.html

Audio System Design Tool

Use this graphical tool to design your audio project. Easily browse the library’s many features, connect objects, export to Arduino code, and quickly access details for the functions each object provides for you to control it from your Arduino sketch!

http://www.pjrc.com/teensy/gui/

Supported Hardware

Audio Adaptor Board for 16 bit stereo input and output.

Inputs Outputs

Teensy 3.1 12 bit DAC

DAC Output

Teensy 3.1 or 3.0 ADC Input

ADC Input

Teensy 3.1 or 3.0 PWM Output

PWM Output